Service wrenches are traditionally designed with trucks and hydraulics in mind. They are also very useful working on new cars and pick-up trucks. This is an angle open end service wrench. It's made tough and durable for a long tool life. This set included the following sizes: 3/4", 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8", 1-3/16", 1-1/4",1-3/8", and 1-1/2" all included in a handy roll bag.